MRA Precision Metal Film Resistors
Europe’s No 1 selling axial thin film high precision resistor. Stable films are
sputtered on to high purity alumina rods, then covered in tough epoxy to
protect from any environmental extremes
• Power dissipation up to 2W
• Value range from R1 to 10M
• Precision tolerance down to 0.05%
• Low TCR 5ppm/ºC
• RoHS Compliant
Characteristics
Tolerance (Code):
Operating temperature:
Temperature coefficient:
Overload:
0.05%, 0.1% (B), 0.25 (C), 0.5% (D), 1% (F)
-55°C to +155°C
5ppm/°C , 10ppm/°C , 15ppm/°C, 25ppm/°C, 50ppm/°C, 100ppm/°C
0.25% rated continuous working voltage =√(P*R)*2.5 for 5 seconds
0.2%, 70 2˚C, rated continuous working voltage for 1000 hours with 1.5 hrs ON and 0.5 hrs OFF
0.3%, 40 2˚C, 90 - 95% RH, rated continuous working voltage for 1000 hours with 1.5 hrs ON and 0.5 hrs
OFF
Endurance:
Damp heat with load:
Solderability:
90% min coverage, 245 5˚C for 3 seconds
Temperature coefficient:
Pulse overload:
by type, resistance value 25˚C and 100˚C
0.75%, 4 times rated continuous working voltage =√(P*R) for 10,000 cycles with 1 second ON and 25
seconds OFF
Terminal strength:
Shelf life:
Tensile ≥2.5kg, direct load for 10 seconds in the direction of the terminal leads
∆R 0.1%, 12 months at 25˚C 3˚C, 80% RH maximum
Dimensions (mm)
Type
L
D
H
d 0.03
MRA0104 3.3 +0.7/-0.2 1.8 0.3
29 2.0
28 2.0
26 2.0
35 2.0
0.45
0.55
0.65
0.78
MRA0207 6.3 0.5
MRA0309 9.0 0.5
MRA0412 11.5 1.0
2.3 0.3
3.2 0.5
4.5 0.5
d
D
L
H
MRA0516 15.5 1.0
5.0 0.5
32 2.0
0.78
Ordering Procedure
Derating Curve
100
80
60
40
20
0
Standard Resistor: Series, Resistance Value, Tolerance, TCR,
Packaging (TA: Taped Ammo, TR: Taped Reel)
e.g.: MRA0104 10R B 15PPM TA
0
20
40
60
80
100
120
140
160
Ambient Temperature (°C)
For more information and ordering, please consult
www.arcolresistors.com
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